We removed a wooden dance floor that was glued to concrete with liquid nails. How do I remove the liquid nails that is all over the concrete floor? Has anyone had success with heat, mineral spirits or any other remover product?

Most adhesives now are urethane based, so if one heats them up with a good hot air gun, they may soften so you can scrape most of it off. But the rest will have to be sanded for sure.
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shirlock homesMar 19 '13 at 16:34

How To Remove LIQUID NAILS Adhesive Products from Building Materials
In general, LIQUID NAILS construction adhesive and caulk
products can be scraped off when they are softened either by:

Heating above 140°F with an electric heat gun or blow dryer

Coating the adhesive with petroleum jelly or mineral spirits for several hours to several days (NOTE: Mineral spirits are not
recommended for tub surrounds, whether vinyl, plastic, painted or
varnished.)

Are we sure it's actually Liquid Nails? It could be generic construction adhesive.
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Chris CudmoreMar 19 '13 at 18:50

If it's rubber based, solvent liquified construction adhesive, (which a good portion of the Liquid Nails line is), the above will also apply. Such products are made by GE, DAP, MDA. The OP will have to determine the composition.
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Fiasco LabsMar 19 '13 at 21:39

I have also removed most of the above with chisel and hammer!
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DMooreApr 15 '13 at 20:21

1

If you melt the adhesive and it gets all gooey that is not a great scenario. I have tried this before. Wear latex gloves and know that whatever you are scraping with might be thrown away. Also note that you will probably not get everything off and instead of having your adhesive tracks you will now have thinner adhesive rivers. This may be OK if you are putting something over this to finish. It just depends. But if you are putting something over then why not chisel... Only time I say not to chisel this stuff off is if you are afraid of breaking material its attached to.
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DMooreApr 16 '13 at 17:24

I had liquid nails all over my walls for my steps leading downstairs after I tore out the fake brick. I am more than sure that the above answers will work but I like free and I like hitting things.

Tools needed:
sharp chisel and hammer.Time it took me to do entire stairs:
about 1 hour.

Procedure:
Just keep the chisel flat so it doesn't take out any chunks of concrete, wear gloves, goggles if you want, I found swinging down worked best. I also found that giving the chisel kind of a constant tap was more productive than killing it. Also they sell scrapers that you can hook up to your compressor if you have one.

Things not needed:
chemicals, gas mask, heating elements.

Benefits of doing it this way:

Wife won't yell at me for buying new tool

Wife won't yell at me about the dust

Wife won't yell at me about using chemicals in the house

House will not smell of dust and chemicals for a day.

Negatives of doing it this way:

Wife will yell at me because I left the scraps of liquid nails laying on the steps.

HerrBag has a tool for everything! Now I might not choose this answer but he shows me a new tool everyday. Also this would probably be best answer if you were finishing the concrete after taking the adhesive out.
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DMooreApr 16 '13 at 17:26

I'm sorry for the delay but wanted to provide an update. When the dance floor was removed, there was a heavy amount of liquid nails covering about 500 sq ft. We had to remove it in order to lay new tile. We tried chipping it, which worked but took a lot of time. The best approach was purchasing a bottle of adhesive remover from Home Depot-- it's stated purpose is to remove the tacky adhesive from sub floors when re-tiling (think of pulling up peel and stick tiles, you must clean the floor prior to installing new tile or it just won't stick). This stuff worked wonders on it, softened it up and it could easily be scraped away. It took two bottles and cost $20.